音标:[,tetrә'sʌlfaid] ;
四硫化物

I couldn't get over this mess. The federal government is confirming what Joan Glickman of Pompano Beach, Florida suspected all along. Tainted drywall from China is giving off a harmful gas that's turning her air-conditioning wiring black, causing it

发表于:2018-12-20 / 阅读(243) / 评论(0) 分类 cnn2009年(十一)月

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

发表于:2018-12-24 / 阅读(303) / 评论(0) 分类 Scientific American(一)月

Mercury Fillings Seem Safer over Time A study in the journal Chemical Research in Toxicology finds that mercury on the surface of dental fillings slowly turns to an inert sulfide compound, which should keep the mercury from harming the nervous system

发表于:2019-01-02 / 阅读(346) / 评论(0) 分类 60秒科学

T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗

发表于:2019-01-03 / 阅读(289) / 评论(0) 分类 医务英语

From VOA Learning English, this is the Health Lifestyle report. Garlic is one of the most common cooking ingredients around the world. Many dishes in Europe, Africa, Asia and the Americas use this strong-flavored vegetable. Garlic is similar to other

发表于:2019-01-12 / 阅读(324) / 评论(0) 分类 2016年VOA慢速英语(十二)月

Black Tongues and Stomach Aches Don: Oh, no, Ya?l, I think I'm having a medical emergency. Quick! Call an ambulance. Ya?l: A medical emergency, Don? Are you sure? You look fine to me! D: But I'm not. This morning, I had a terrible stomach ache. And n

发表于:2019-01-26 / 阅读(251) / 评论(0) 分类 英语听力文摘 English Digest

Sewage stinks. But bacteria can make it smell better. Oh, yeah? That's true. Certain forms of bacteria feasting on sewage give off hydrogen sulfide, a really malodorous chemical, and one of several that give sewage its pleasing smell. In general this

发表于:2019-01-26 / 阅读(251) / 评论(0) 分类 英语听力文摘 English Digest

10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur

发表于:2019-02-17 / 阅读(358) / 评论(0) 分类 万物简史
学英语单词
acetyltransferse
acoustical pick-up
Aethoxidum
amplifier bandwidth
Angir.
Bartter's syndrome
belphagor
big-star
bille
bolt heater
brined hide
build-to
bullet-locator
carbapenemase
Castle Morpeth
centrifugal-rolling process
chilled bottom
confluent thermal trough
contingency fund
Cotoneaster buxifolius
cut-stone masonry
dendritic ice crystal
dewatered
diloricate
do-it yourself divorce
double taps
downward drift
ejection fraction
fare register
faulted seam
fibrous-gypsum
flanders interaction analysis
Gentiana angusta
genus Buchloe
gomboge
heat insulating materials
higher than normal rates of outcrossing
hologram imagery
homopolysaccharides
hypoxanthine-aminopterin-thymidine
ideal coding
integrated search plans
inter-cluster correlation coefficient
keep the enemy on the jump
Kegalle
Krull ring
letter of credit agreement
lipham
low impedance
mahayanists
mechanical thrombus
metallic-rectifier cell
Mineyama
minibuffer
monged
Mtindilo
nagarase
natrium hydrosulfurosum
neo-Gothic style
no-slip boundary condition
non-uniform flow
ocra
on the wrong side of
oxyfluorfen
pamerana scotti
patterned glass
pernach
Pierrefonds
production piece
projective scale
quadruplex house
read notification
realized capital loss
relation line
reliability inspection
remote indicating pressure gages
Rhododendron vesiculiferum
rockworks
rybnitsa (ribnita)
sensory cell
sesquisulphides
somaestheses
speed on load
stagewise
standard clause
starsky and hutch
stiffness method
strand guide
tec tek
terminal devanning
thrown my eyes up
tubero-
turn to dust and ashes
unexpectation
unit-sample sequence
Vickers hardness scale
volcano-geothermal region
Vorotan
word combination
ycrowned
Yres